共查询到20条相似文献，搜索用时 93 毫秒
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近年来国际学术界在本体对应研究方面呈现三个主要特征:一是投入了更多关注,使相关研究日臻成熟;二是在开放语义网络环境下,研究人员更青睐于多本体的匹配与对应,并且本体对应已成为学术界构建适于分布式网络结构的多本体协同系统的主要手段;三是越来越多的研究成果已经从基础理论研究转向了针对具体问题的实证研究。但开放性、分布式的语义Web环境对现有不同本体间的协调应用提出了挑战。通过对2000年以来国际学术界关于本体协调相关文献和研究成果的梳理,阐明了以本体映射为核心的本体协调各要素之间的关系,并对本体合并、本体集成与本体对应三条本体协调主要发展路径的前沿热点进行了分析,指出未来本体协调的相关研究将继续沿着"本体构建→本体合并→本体集成→本体对应"这一总体路径向前发展。 相似文献
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文章从构建全局模式本体的角度,提出了基于本体集成的资源模型,分析了基于本体的全局模式信息集成方法及数字资源整合结构,为解决数字资源服务中的统一性、高效性等问题提供了一种综合性的解决方法。 相似文献
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文章从构建全局模式本体的角度,提出了基于本体集成的资源模型,分析了基于本体的全局模式信息集成方法及数字资源整合结构,为解决数字资源服务中的统一性、高效性等问题提供了一种综合性的解决方法。 相似文献
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知识管理中本体演化研究 总被引：3，自引：1，他引：3
领域知识和术语的复杂性和多样性是影响知识管理系统成功的关键。本体将在开放式知识管理系统中起到至关重要的作用 ,它通过定义精确的共享术语 ,以提供某一特定领域可重用的知识。但是这些知识并不是静态的 ,而是随着时间的推移不断演化。领域的改变、自适应不同的任务、或概念模型的改变都要求本体的变更。本体演化的支持在本体的分布式开发和应用中非常重要。本文首先对知识管理中本体演化的原因和所带来的问题进行分析 ,然后讨论了本体演化管理的系统框架和应用实例 ,着重强调了本体标识和本体变化机制的定义 ,并对今后的研究工作进行了展望 相似文献
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基于本体的语义检索是提高信息系统检索精确度的有效途径之一.概念云是云模型在信息领域的应用,是本体中的概念按照一定算法在页面中的排列聚合.基于本体与概念云来构建信息检索系统,其设计方案是采用自上而下与自下而上的两种方式相结合构造全局本体、局部上层本体、局部下层本体;再使用Web2.0环境下的内容管理工具进行本体中概念的管理与组织,从而形成概念云;最后以本体与概念云来完善信息检索系统,既提高检准率,又满足用户对知识获取的需求,并可为其他本体系统构建者提供对概念的获取与重用用户知识的功能.本文还描述了本系统语义检索功能实现的原理,阐述了该系统基本实现步骤和关键细节,并展示了该系统的部分功能. 相似文献
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在考查国内外一些本体项目的基础上,同时考虑到本体的分布性是必然的,采用混合方式构建本体,并使用分布式数据库实现。实际设计中基于项目前期成果新改造的概念间关系,在ASP.NET平台下设计开发分布式本体编辑系统ADORES来构建分布式本体库。介绍ADORES的设计思想、功能,重点介绍ADORES的难点及实现方法,并给出OWL、SKOS标准描述格式导出、概念树、关系可逆性等难点的部分代码。 相似文献
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本体驱动的数字图书馆信息资源语义互操作研究 总被引：3，自引：0，他引：3
鞠彦辉 《图书馆理论与实践》2010,(1)
从本体的建立、本体间的映射以及语义互操作服务三个方面构建了本体驱动的数字图书馆异构信息资源语义互操作框架,将信息资源互操作和共享的问题转化为本体间的映射问题,从而将有效实现分布式数字图书馆之间异构信息资源的语义互操作。构建本体的最终目的是实现推理,利用文献的等级结构和定义的属性可以在转化的MARC上实现推导文献间关系的目标。本体映射是解决不同本体间的知识共享和重用问题的主要技术。完成本体映射后所构建的领域本体服务器是进行信息互操作与集成的核心,是提供语义互操作服务的基础。 相似文献
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中文叙词表本体一致性检测机制研究与实现 总被引：3，自引：0，他引：3
本文研究了中文叙词表本体（OntoThesaurus,即基于中文叙词表建立的本体知识库）的一致性检测机制,并将其应用在中文叙词表本体共建共享系统（OTCSS）的修订意见提交、叙词表本体更新和全局检查等相关过程的实现中,取得了良好的应用效果。 相似文献
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本体模块化:特征、描述与方法 总被引：4，自引：0，他引：4
近年来,本体模块化研究受到研究者的普遍关注.本文全面综述了本体模块化研究的最新进展,包括本体模块化特征、形式化描述语言及构建与选取方法.在形式化描述方面,主要研究成果有分布式描述逻辑、ε-连接及基于包的描述逻辑,比较分析了它们的特点和关联,讨论了有待进一步解决的问题.在构建和选取方面,介绍了模块化设计模式、模块化划分与抽取方法的最新研究成果. 相似文献
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《Slavic & East European Information Resources》2013,14(1-2):123-143
ABSTRACT The article examines the most important periodicals of ethnic minorities in Poland. After 1989, many ethnic groups (e.g., Germans and Romanies) were allowed to publish journals and newspapers for the first time since the end of World War II. The publications examined show the rich cultural life of the various ethnic groups as well as their current status in Poland. In addition to popular titles, some scholarly publications are also discussed. 相似文献
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Jon C. Giullian 《Slavic & East European Information Resources》2013,14(3):278-284
The author answers a reference question on bibliographic sources for the Ukrainian periodical press 1840–1850. Helpful publications include bibliographies, guides, and library catalogs. These potentially make mention of revolutionary developments in Hungary (such as the Twelve Points paragraph of the Demands of the Hungarian Nation in March 1848, the subsequent April Laws, and Hungary's declaration of independence in April 1949), and elsewhere in the Hapsburg Empire. 相似文献
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Most studies of collection development mask inadequate theoretical underpinnings with facile assumptions and dazzling statistical manipulations. This essay, in moving toward a model for collection development within both specific collections and library systems as a whole, seeks to demonstrate the full range and complexity of relevant factors. An enlarged theoretical grasp should help highlight both the possibilities and the challenges of existing approaches. One result could be a shift toward gaming or simulation techniques as more realistic analytical tools. 相似文献
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Jason D. Phillips 《期刊图书馆员》2013,64(1):82-101
An annotated list is presented describing seventeen periodicals that cover significant aspects of the gay, lesbian, bisexual, and transgender (GLBT) community and their culture in whole or in part, with popular content rather than an academic or research focus. The titles included are a selective and representative sampling. The entry for each periodical includes the following information: periodical title, publisher/editor and address, basic information, publication data, content, Internet information, an abstract/annotation, and evaluative statement 相似文献
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SUMMARY Ariel files are the starting point for electronic delivery of interlibrary loan articles through ILLiad, Virginia Tech's interlibrary loan system. Despite some advantages to electronic delivery of articles to their desktops, a large majority of ILL customers continue to prefer print on paper delivery rather than electronic delivery. This fact has implications for introducing additional electronic services. Correctly choosing what services to impose on library customers, and what services to offer as value-added options, is fundamental to maintaining the credibility of libraries during these times of rapid change. 相似文献
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SUMMARY The state of Illinois funded a large scale Ariel project. This is a report of the project's successes and shortcomings. Although widely successful, additional training in the use of sophisticated hardware, primarily Minolta scanners, is needed. Data on sending and receiving is included. 相似文献
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《Slavic & East European Information Resources》2013,14(2-3):21-29
SUMMARY The authors discuss the development of the Slovak periodical press within its historical context and their expectations for its future. The article covers general characteristics of Slovak magazines and newspapers from World War II to 1989, and their later development since the Velvet Revolution up to the present. It also discusses the Slovak press outside of Slovakia from the late nineteenth century. 相似文献
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Library Journal's 2011 Ebook Penetration and Use in U.S. Libraries Survey testifies to e-books’ increasing popularity in academic libraries. This review tracked literature published from 2005 that focused on academic librarians’ best practices for acquiring, cataloging, maintaining, and promoting e-books at their institutions. Some of these practices include implementing trial accesses, considering institutional requirements, providing an e-book presence in the library catalog, monitoring usage statistics, and utilizing the library Web site for promotional efforts. 相似文献
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《Slavic & East European Information Resources》2013,14(2-3):31-47
SUMMARY There are between fifteen and twenty U.S. libraries that collect publications from Central Asia, defined here as Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan and Uzbekistan. Collection development responsibility for these countries tends to rest with the Slavic selector, the Middle East selector, or both, divided by language. Vendors who can supply this material mostly also supply publications from other countries of the former Soviet Union. The author briefly discusses the history of collecting from this region and the results of a survey conducted in 2004. She presents evidence indicating that the main reason U.S. libraries are not receiving more books from the region is most likely because they are not being published, not because vendors are doing an inadequate job. 相似文献